A lot of weapons made during Eastern Zhou period with typical Wu State characteristics have been unearthed in Zhoujia Village, Xintai City, in Shandong Province. Among those weapons, bronze swords are the most characteristic. In order to understand the construction and technique of jointing in pommels decorated with concentric circles and of handles of the swords made during the Eastern Zhou period,three such swords were analyzed by Xray and computer tomography (CT) methods. The results show that two casting techniques are used:onepiece casting and the casting-on technique. Two of the swords were formed by two-stage casting and one by three-stage casting. CT was used in this study to clearly demonstrate the shapes and distributions of the tenons in the two pommels decorated with concentric circles. In this article, the variety and the flexibility of the joining techniques applied in these ancient pommels are discussed. This work demonstrates the skills and excellent joining techniques used for making bronze objects during that time.